We all fail at some point in life. That doesn't mean we should regret our decisions. If we don't believe in ourselves, who would? We make decisions using limited information. We don't know the outcome till it has happened. All you can do is your best.
Action
If you just complain,you can't bring change. Stop complaining and start working or else stop complaining and let others work.
Source
Always ask people where their money comes from because their interests lie there.